.header {
  height: 50px;
  width: 100%;
  text-align: center; //水平居中
  line-height: 50px; //跟高度一样
}

.logo {
  float: left;
}
.number {

  float: left;
  margin-left: 20px;
}

.salesExtra {
  display: inline-block;
  margin-right: 24px;
  a {
    margin-left: 24px;
    color: #000;
    &:hover {
      color:  #1890FF;
    }
    &.currentDate {
      color:  #1890FF;
    }
  }
}
